Heavy copper PCBs

PCB Portfolio

Heavy copper PCBs

The heavy copper PCB segment is a growing part of our production. In order to support this important segment, we are developing long-standing relationships with several factories which are carefully selected in our sourcing process.

What is a heavy copper PCB?

It is a PCB made with two or more conductive copper layers. The conductive foil appears to be thicker than on standard PCBs. The different inner layers are processed in pairs (on a core) and then bonded together using prepreg as the insulating layer. The layers are then placed in such a way that both sides of the PCB can be used to mount components with additional tracking/electrical connections on the inside of the board. Vias are used as a source of the electrical connections between the different layers of the PCB.

More and more products are using heavy copper PCBs, for example EV-chargers, high current systems and power storage systems.

Please contact your local NCAB Group company if you need further information or assistance, we are happy to help you.

FeatureNCAB´s technical specification
Number of layers4 – 22 layers standard, 30 layers advanced, 40 layers prototype, much depending on copper thickness.
Technology highlightsMultiple layers of epoxy glass fiber bonded together with multiple layers of copper of varying thicknesses.
MaterialsHigh performance FR4, halogen-free FR4
Copper weights (finished)18-210µm, advanced 1050µm / 30 Oz
Minimum track and gap 0,075mm / 0,075mm (very much depending on copper thickness)
PCB thickness0.40mm – 7.0mm, Min thickness depending on number of layers and copper thickness
Maxmimum dimensions580mm x 1080mm, advanced 610mm x 1400mm
Surface finishes availableHASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion Tin, Immersion Silver, Electrolytic gold, Gold fingers (HASL / LF HASL not recommended)
Minimum mechanical drill 0.20mm

Download our PCB design guidelines

To prevent getting it wrong from the start, we have put together our design guidelines, to use as a checklist.